Corey Lake
St. Joseph County, Michigan597 acresView mapDirections
EGLE publishes the water-quality measurements for Corey Lake. Here is what has been measured.
- Limited data
Corey Lake in St. Joseph County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 14.5 ft visibility. Surface area: 596.5 acres.
Free interactive depth-contour map of Corey Lake, reaching a maximum surveyed depth of 70 ft. Toggle Depth contours to overlay the bathymetric survey lines. Contour data from Michigan DNR.
Corey Lake is a 597-acre lake in St. Joseph County, Michigan. Overall water quality is improving over recent sampling years. The lake supports 13 documented fish species including Bluegill, Bluntnose minnow, and Grass pickerel.
Source: EPA Water Quality Portal sampling records, EGLE, last sampled 2022-09-17. Methodology: how these readings are compared.
Corey Lake covers about 600 acres in St. Joseph County. For a place on the water, look through cabin and lake-house rentals near Corey Lake on Vrbo. For a hotel or motel room, Booking.com and Expedia both search around the lake.
What Corey Lake is good for
From access and monitoring records, not editorial picks.
- Clear water14.5 ft of visibility
- Fishing13 species recorded
Swimming conditions
No readingLimited data
Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
Whether Corey Lake is safe to swim in today is a call for the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and the county health department, who post current advisories. LakeQuality does not issue swimming clearances.
Water quality measurements for Corey Lake
These are the measurements EGLE publishes for Corey Lake, shown as reported. The condition class beside each reading is the EPA National Lakes Assessment class for this lake’s ecoregion.
Good clarity, visible to about 14.5 ft. TSI 39.
| Measure | Reading | Where it sits |
|---|---|---|
| Water clarity (Secchi depth) | 14.5ft | Measured, not scored How deep a black-and-white disk stays visible from the surface. Higher is clearer. |
| Total phosphorus | No reading The nutrient that most limits algae growth in freshwater. More phosphorus, more algae potential. | |
| Chlorophyll-a (algae) | No reading The green pigment in algae — a direct measure of how much algae is in the water. | |
| Trophic state (TSI)Carlson's 0–100 index of how much algae a lake can support, from clarity, phosphorus and chlorophyll-a. | 39 | Oligotrophic OligotrophicMesotrophicEutrophicHypereutrophic |
Low nutrients, clear water. No reading is a swimming clearance.
Ask about Corey Lake
Answers come straight from the public measurements and survey records on this page.
Lake Details
Surface area
597 acres
No bathymetric survey has been published for Corey Lake, so its depth is not documented here.
Stays via Stay22
Stays near Corey Lake
Compare lakeside cabins, hotels, and vacation rentals near Corey Lake in St. Joseph County, Michigan — live availability and prices for your trip. Switch the map to Satellite to see the lake and how close each stay is to the water.
Top-rated places to stay near Corey Lake
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Fish Species
Click a species to see every lake where it is documented.
Fishing Corey Lake
Water Quality Trend: Improving
Based on 7 years of monitoring (2016–2022).
Water clarity
Improving7 years
Phosphorus
Stable+0.12 µg/L/yr5 years
Chlorophyll-a
Improving-0.05 µg/L/yr3 years
Nearby Lakes in St. Joseph County
Frequently asked questions about Corey Lake
Where is Corey Lake?
- Corey Lake is a lake in St. Joseph County, Michigan. Its water-quality measurements are published by EGLE and shown on this page as reported.
What is the water quality of Corey Lake?
- Corey Lake in St. Joseph County, Michigan has water-quality measurements published by EGLE, shown here as reported. Water clarity: 14.5 ft visibility. Surface area: 596.5 acres.
Is Corey Lake safe to swim in?
- Nutrient and algae readings are not a swimming clearance. Check local advisories before you swim.
What fish are in Corey Lake?
- Fish species found in Corey Lake include Bluegill, Bluntnose minnow, Grass pickerel, Green sunfish, Hornyhead chub, Iowa darter, Lake chubsucker, Lake herring, Largemouth bass, Northern longear sunfish, Pumpkinseed, Western banded killifish, Yellow bullhead. Corey Lake is located in St. Joseph County, Michigan.
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Where this data comes from
137 measurements from 1 monitoring station, 2016–2022. Retrieved from the EPA Water Quality Portal on 2026-08-26.
Collected and reported by
- North American Lake Management Society
NALMS137 samples · 2016–2022
Monitoring station identifiers (1)
EPA condition classes from the National Lakes Assessment (EPA 841-R-24-006, Table 6-3), applied by ecoregion. See where the data comes from and data sources.